ABSTRACT Mass shootings have become increasingly prevalent in schools and healthcare settings. Unfortunately, little information is available on training for active shooter scenarios in which a staff member is also responsible for a client. This deficit is concerning, given that previous research has found that 75% of individuals freeze during emergencies. Behavioral skills training has been shown to be an effective way to teach a variety of safety-related skills. This study used a concurrent multiple-baseline-across-participants design to evaluate the effects of behavioral skills training on active shooter scenario safety-related skills of three Registered Behavior Technicians®. The experimenters trained the participants on how to respond under various conditions and when they should run, hide, or fight. All three participants mastered the safety-related behaviors in the three conditions (run, hide, fight), demonstrated generalization to more realistic antecedent stimuli, and maintained the skills over time.